package cn.wolfcode.service.impl;

import cn.wolfcode.domain.Department;
import cn.wolfcode.mapper.DepartmentMapper;
import cn.wolfcode.qo.PageResult;
import cn.wolfcode.query.QueryObject;
import cn.wolfcode.service.IDepartmentService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

import java.util.Collections;
import java.util.List;
@Service
public class DepartmentServiceImpl implements IDepartmentService {
@Autowired
    private DepartmentMapper departmentMapper;
    @Override
    public void save(Department department) {
        departmentMapper.insert(department);
    }

    @Override
    public void delete(Long id) {
        departmentMapper.deleteByPrimaryKey(id);

    }

    @Override
    public void update(Department department) {
        departmentMapper.updateByPrimaryKey(department);
    }

    @Override
    public Department get(Long id) {
        Department department = departmentMapper.selectByPrimaryKey(id);
        return department;
    }

    @Override
    public List<Department> listAll() {
        List<Department> list = departmentMapper.selectAll();
        return list;
    }

    @Override
    public void get() {

    }

    @Override
    public void incr() {
        System.out.println("减少");
    }

    @Override
    public PageResult<Department> query(QueryObject qo) {
        int count = departmentMapper.selectForCount(qo);
        if(count == 0){
            return new PageResult<Department>(qo.getCurrentPage(),qo.getPageSize(),count,Collections.emptyList());
        }
        int totalPage = count % qo.getPageSize() == 0 ? count/qo.getPageSize() : count/qo.getPageSize()+1;
        if(qo.getCurrentPage() > totalPage){
            qo.setCurrentPage(totalPage);
        }

        List<Department> departments = departmentMapper.selectForList(qo);
        return new PageResult<Department>(qo.getCurrentPage(),qo.getPageSize(),count,departments);
    }
}
